#include <stdio.h>
#include <stdbool.h>
#define SOLID 0
#define DOTTED 1
#define DASHED 2
#define BLUE 4
#define GREEN 2
#define RED 1
#define BLACK 0
#define YELLOW (RED | GREEN)
#define MAGENTA (RED | BLUE)
#define CYAN (GREEN | BLUE)
#define WHITE (RED | GREEN | BLUE)
const char *colors[8] = {"black", "red", "green", "yellow", "blue", "magenta", "cyan", "white"};
struct box_props
{
    bool opaque : 1;
    unsigned int fill_color : 3;
    unsigned int : 4;
    bool show_border : 1;
    unsigned int border_color : 3;
    unsigned int border_style : 2;
    unsigned int : 2;
};
void show_settings(const struct box_props *pb);
int main()
{
    struct box_props box = {true, YELLOW, true, GREEN, DASHED};
    printf("Original box settings:\n");
    show_settings(&box);
    box.opaque = false;
    box.fill_color = WHITE;
    box.border_color = MAGENTA;
    box.border_style = SOLID;
    printf("\nModified box settings: \n");
    show_settings(&box);
    return 0;
}
void show_settings(const struct box_props *pb)
{
    printf("Box is % s.\n", pb->opaque == true ? "opaque" : "transparent");
    printf("The fill color is %s.\n", colors[pb->fill_color]);
    printf("Border %s.\n", pb->show_border == true ? "shown" : "not shown");
    printf("The border color is %s.\n", colors[pb->border_color]);
    printf("The border style is ");
    switch (pb->border_style)
    {
    case SOLID:
        printf("solid.\n");
        break;
    case DOTTED:
        printf("dotted.\n");
        break;
    case DASHED:
        printf("dashed.\n");
        break;
    default:
        printf("unknown type.\n");
    }
}
